#ifndef _ADPCMCODEC_H_
#define _ADPCMCODEC_H_
struct adpcm_state
{
	short valprev; /* Previous output value */
	char index; /* Index into stepsize table */
};
void  adpcm_coder(short indata[], char outdata[], int len, struct adpcm_state *state);
void  adpcm_decoder(char indata[],short outdata[], int len,  struct adpcm_state *state);
#endif